Laminated Motor Core Cooling with Internal and External Airflow
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Solution Overview
Problem
Existing cooling methods for laminated cores in motor manufacturing fail to effectively cool the interior of the core and the jigs, leading to delayed processes and reduced productivity due to natural cooling and incomplete cooling.
Innovation Solution
A cooling apparatus that simultaneously sprays cool air onto both the exterior and interior of the laminated core, using a transfer jig with inner and outer grooves and tubes to ensure uniform cooling, thereby improving productivity and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cool air is supplied only to the outside of the laminated core, then the cooling chamber can be cooled, but the inside of the laminated core and the jigs are not completely cooled, requiring natural cooling which delays the process
Solution Approach 1:
The cooling system is segmented into multiple cooling paths: an external cooling path that supplies cool air to the outside of the laminated core and jigs, and an internal cooling path that supplies cool air to the inside of the laminated core through the insertion hole. This segmentation allows simultaneous cooling of both external and internal regions, eliminating the need to wait for natural cooling and reducing process delay.
Solution Approach 2:
The cooling approach transitions from a single-dimensional external cooling method to a multi-dimensional cooling system by introducing internal cooling through the insertion hole. This adds a new dimension (internal space) to the cooling process, enabling cool air to reach the core interior directly, thereby achieving complete cooling without extending process time.
2Manufacturing precision
If high-frequency induction heating is used to cure the adhesive layer, then the laminated core can be manufactured, but the upper and lower jigs are also heated, requiring a cooling process that may delay subsequent operations
Solution Approach 1:
The cooling system is divided into separate cooling channels: one for the laminated core and another for the upper and lower jigs. This segmentation allows independent cooling control, enabling the jigs to be cooled rapidly after heating during adhesive curing, thereby maintaining high manufacturing speed without compromising adhesive bonding quality.
Solution Approach 2:
The cooling process is designed to operate continuously and efficiently after the heating phase, with cool air supplied through the insertion hole and external cooling paths simultaneously cooling the core and jigs. This continuous cooling action prevents thermal accumulation and enables rapid transition to the next manufacturing step, maintaining high productivity.
3Temperature
If natural cooling is used for the laminated core and jigs after heating, then the system can cool down, but the process is delayed and productivity is reduced
Solution Approach 1:
Cool air is supplied in advance through the insertion hole and external cooling paths during and immediately after the heating process. This preliminary cooling action prevents excessive heat accumulation in the laminated core and jigs, enabling faster cooling and reducing waiting time for subsequent operations, thereby maintaining high manufacturing efficiency.
Solution Approach 2:
The cooling system operates continuously with cool air flowing through multiple paths (internal and external) simultaneously, ensuring uninterrupted cooling of both the laminated core and jigs. This continuous cooling action eliminates idle waiting time and maintains steady manufacturing throughput, improving overall productivity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Rapid and uniform cooling prevents thermal deformation and reduces dimensional errors, enhancing the manufacturing process efficiency and product quality.
Implementation Method 1
a proximate cooler 8 which is installed to cover the exterior of the transfer jig 30... an outer groove 83 is formed vertically on the outer side of the side wall 82 of the proximate cooler 8
Implementation Method 2
an inner cool air supply port 75 which is installed in the lower part of the base plate 40 to supply cool air to the lower part of the base plate 40
Implementation Method 3
by means of high-frequency induction heating, a laminated core is heated to thermally cure the adhesive layer between core sheets
Data Source
AI summary
A cooling apparatus for manufacturing a laminated core of a motor includes a transfer jig 30 which includes an upper jig 31, and a lower jig 32 in which a laminated core 200 is mounted; a base plate 40 in which the transfer jig 30 is installed and moved; an inner cool air supply port 75 which is installed in the lower part of the base plate; and a proximate cooler 8 which is installed to cover the exterior of the transfer jig 30 and comprises a cover 81 and a side wall 82 extending downwardly from the circumference of the cover 81, characterized in that an outer groove 83 is formed vertically on the outer side of the side wall 82 of the proximate cooler 8, and an inner groove 85 is formed vertically on the inner side of the side wall 82.